Myung, SW Min, HK Kim, DH Kim, M Cha, S Yoo, EA Yim, YH 2024-01-21T10:45:24Z 2024-01-21T10:45:24Z 2021-09-05 2002-04 0951-4198 https://pubs.kist.re.kr/handle/201004/139658 Using gas chromatography/electron impact-mass spectrometry (GC/EI-MS) and high performance liquid chromatography with atmospheric pressure chemical ionization tandem mass spectrometry (HPLC/APCI-MS/MS), the structures of cyclofenil metabolites in human urine have been assigned. The hydroxyl metabolites liberated from the glucuronide conjugates after acid hydrolysis were characterized as the trimethylsilyl (O-TMS) derivatives using GC/MS. The conjugate glucuronide forms were detected without hydrolysis by HPLC/MS. Cyclofenil was not observed in urine. Tentative structures for the two metabolites are proposed. Copyright (C) 2002 John Wiley Sons, Ltd. English JOHN WILEY & SONS LTD Mass spectrometric analysis of cyclofenil and its metabolites in human urine Article 10.1002/rcm.636 1 RAPID COMMUNICATIONS IN MASS SPECTROMETRY, v.16, no.8, pp.761 - 767 RAPID COMMUNICATIONS IN MASS SPECTROMETRY 16 8 761 767 scie scopus 000174612200004 2-s2.0-0036009365 Biochemical Research Methods Chemistry, Analytical Spectroscopy Biochemistry & Molecular Biology Chemistry Spectroscopy Article cyclofenil metabolite urine